# Service campaign S4536 202506

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service campaign
- NHTSA id: 11019949
- Published by NHTSA: 2025\-07\-01
- Manufacturer's number: S4536 202506
- Manufacturer's date: 2025\-06\-01
- NHTSA component: ELECTRICAL SYSTEM; UNKNOWN OR OTHER

## NHTSA's summary

Mack Trucks has identified that certain MDe model trucks may have complications with the instrument cluster displaying a message requesting the truck be shifted into neutral when the driver’s door is opened, and the truck is already in neutral. Some trucks may also experience issues related to instrument clusters missing the VINNO parameter, affecting Geotab’s ability to read the datalink. Follow the instructions below to update the software in the instrument cluster.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11019949-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11019949-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2024 to 2026 MACK MD \(ELECTRIC\)

JSON: [/v1/bulletins/11019949](/v1/bulletins/11019949)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20campaign%20S4536%20202506&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11019949&vehicle=Service%20campaign%20S4536%20202506)